diff --git a/.github/workflows/integ.yml b/.github/workflows/integ.yml
index 99b8b6aa..681fe061 100644
--- a/.github/workflows/integ.yml
+++ b/.github/workflows/integ.yml
@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          - macos-12
+          - macos-15
           - ubuntu-18.04
           - windows-2019
         emacs-version:
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2d5d5ab9..5b185eab 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -27,21 +27,21 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          - macos-12
+          - macos-15
           - ubuntu-20.04
           - windows-2019
         emacs-version:
-          - '27.2'
-          - '28.1'
+          - '28.2'
+          - '29.4'
         include:
           # XXX: The (os, emacs-version) combination must be different from those from those above,
           # otherwise GitHub Actions modifies the existing combinations, instead of adding new.
-          - os: macos-11
-            emacs-version: '27.2'
+          - os: macos-15
+            emacs-version: '28.2'
             # Cross build
             target: aarch64-apple-darwin
-          - os: macos-11
-            emacs-version: '28.1'
+          - os: macos-15
+            emacs-version: '29.4'
             # Cross build
             target: aarch64-apple-darwin
     runs-on: ${{ matrix.os }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b95f11eb..8c751194 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,12 +19,12 @@ jobs:
         # The `os` versions below should be as low as possible, for better compatibility.
         include:
           # TODO: Get host platform from rustc instead of specifying it explicitly.
-          - os: macos-11
-            emacs-version: '27.2'
+          - os: macos-15
+            emacs-version: '28.2'
             ext: dylib
             host: x86_64-apple-darwin
-          - os: macos-11
-            emacs-version: '27.2'
+          - os: macos-15
+            emacs-version: '28.2'
             ext: dylib
             target: aarch64-apple-darwin
           - os: ubuntu-20.04
@@ -126,7 +126,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: macos-12
+          - os: macos-15
             emacs-version: '27.2'
           - os: ubuntu-20.04
             emacs-version: '27.2'
diff --git a/bin/setup b/bin/setup
index 28391068..f47608cf 100755
--- a/bin/setup
+++ b/bin/setup
@@ -9,6 +9,6 @@ source "$here/env.bash"
     cd "$PROJECT_ROOT"
     # XXX: Create the directory because `eask link` doesn't.
     #mkdir -p "$(eask package-directory)"
-    eask link tsc core
+    eask link add tsc core
     eask install
 )
diff --git a/bin/setup.ps1 b/bin/setup.ps1
index f4fde09b..7da417ec 100644
--- a/bin/setup.ps1
+++ b/bin/setup.ps1
@@ -6,7 +6,7 @@ try {
     # XXX: Create the directory because `eask link` doesn't.
     #$eask_package_dir = ((eask package-directory) | Out-String).Trim()
     #New-Item -ItemType Directory -Force -Path "$eask_package_dir"
-    eask link tsc core
+    eask link add tsc core
     eask install
 } finally {
     Pop-Location